Controller.



W. D. PUMEROY 6: E. G. WRIGHT.

OOHTBOLLZB.

urmonron mum no.4. nos. nzunwnn rm. :1. 1901.

902,834. Patented Nov. 3, was.

8 BIRTH-SHEET 1.

Invenfora mm 17. Ram:

902,834. Patented Nov. 3, 1902.

8 BHBBTB-IKEET I.

a so a v I 7 L Invanlbr wglhesggs a fill/21m 0. Pamela tdwdr C lm'gbt may UNITED s'rA'rss Pn rEN'r OFFICE.

WILLIAM D. IOMEROY. OI NORWOOD, OHIO, AND EDWIN l. WRIGHT. 01- NEWPORT,

KENTUCKY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO THE B COMPANY, A CORPORATION OF OHIO.

L'LLUCK ELECTRIC CONTROTJLEB.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Application filed August 4, 1903, Serial No. 168,154. Renewed February 21, 1907. Serial No. 868,728.

To all whom i t may concern:

Be it known that we, WILLIAM I). IonERoY and Enwn' C. WRIGHT, citizens of the United States, residing, the former at Norwood, in the county of Hamilton and State of Ohio, and the letter at Newport, in the oountycf Campbell and State of Kentucky, have mrented certain new and useful Improvements in Controllers, of which the following is a full, clear, and exact specification.

Our invention relates to controllers for electric motors and more particularly to controllers adapt-ed to vary the speed of a. motor by changing the voltage applied thereto and operated from a. multiple voltage system.

One object of our invent-ion is to produce a controller which shall be simple in construction, reliable in operation and which will allow convenient access to all parts.

Another objectis to produce :1 control e which will have a quick break and so minimize the sparking at contacts.

Another object is to construct a controller which will positively engage each step suecessively, only one step being taken for each throw of the operating handle, and prevent the drum from stopping between steps.

By our invention movementof the handle subjects a spring to increased tension, which tension is suddenly released, giving a quick turn to the controller cylinder; and we also provide means to quickly and positively check the movement of the contro ler at the adjacent step. A second throw of the operating handle is then necessary to pass to the following step. By thus providing a quick break we do away with the necessity for pro viding special devices for blowing out the arc and can also make the ports lightsnd simple in construction and greatly reduce the size of the controller for a given capacity.

Although we have shown and described antomatic means for inserting and cutting out a resistance in the armature circuit when change of voltage takes place, this forms no part of our joint invention and we do not claim to be joint inventors of the same. It is shown only for the purpose of a better understanding of our invention.

Our invention further consists in the novel construction, combination and arrangement of ports, all as hereinafter described and set forth in the appended claims.

in the accompanying drawings which show the preferred form of construction-Figure 1 is a diagram showing the development of the controller cylinder and circuits. Fig. 2 is a side view of the controller with the cover removed and some parts in section. Fig. 3 is a detail of the insulating washers. Fig. 4 is a plan view of the top )late of the controller. Fig. 5 is a sectional 55 of Fig. 2. Fig. 6 is an enlarged plan view of the arm and pawl carried thereby. F 7 is a side view of the some.

n Fig. l the enerators are indicated at 1, 1' in series with each other and connected bv the switch 2 to the three wire mains 3, 3, 3 and supplying voltages which differ from each other; for example, enerator 1 may give 160 volts between mains 3 and 3' and generator 1 may ire 90 volts between mains 3' and 3". T e armature of the motor whose speed is to be varied is indicated at 4 and its field windi at connect-ed in series with the variable held resistance 6. The field winding and its resistance is connected across the mains 3, 3" by the leads 7, 8 and so receive the full voltage of both generators. In series with the arnuiture lead 9 is the resistance 9'. Leads to the terminals of switch 10 form a short circuit about the armature resistance when said switch is closed. This switch provided with an upwmdly extendi 9' soft iron arm 11, which forms the core 0 the coil 12. A lower extension from the switch carries the )lunger 12; which works in the cylinder 14, orming a dash-pot. The plunger 13 is rovided with openings 15 and carries aloose y fitting fiat ring 16 which normally closes the openings 15. The cylinder 14 is provided with openings 17 located equally distant from the closed bottom of the clinder. When current passes in coil 12, he switch is raised with a comparatively slow movement as the air 1118895 to the bottom of the lun er only leakage about the same. ust before the switch is closed, however, the plu er passes by the holes 17, permitting a free ow of air below it and the switch then closes with a sudden movement. When no current passes in coil 12, the switch uickly falls by gravity or s wring pressure, tis air from beneath the p ungcr passing freely through the holes 15 as the ring 16 is then raised from its seat.

The parts above described are interconnected and also connected to the fingers 1",

view on the line I of the controller as shown. The controller linder is made up of three drums 18, 19 and 20 insulated from each other. The two upper drums control the connec tions to the armature and have the contacts indicated held 11 on lugs rojectmg frorn the body of the m. e lower cxlmder 0 es the field resistance and 1s m the form of a cylinder having cut-away ort ons.

As the cylinder is revolved from 0 posit on the fingers 1, 1", 1 take the successive 'tions indicated by the lines 2, 252, 23hr forward rotation and the positions 3, 3", 3 for backward rotation of the motor.

For position 2 the path of the current is as follows: from main 3" to finger 1", contact 21, drum 19, contact 22, finger 1', lead 22, armature 4, lead 24, switc 10, which is closed, leads 9 and 25, finger 1*, contact 26,

drum 18 contact 27, r 1 to mm 3',

thus sub ecting the armature of the ureter to the voltage of tor 1 For t1o n 2 the field connections are from c mam 3, through lead 7, field 5, finger 1, drum 20,

finger 1 lead 8 to mam 3", thus sub ecting the field to the full Voltage of means 3, 3 with all of resistance 6 cut out. Connection is also made from main 3 through coil 12 to r 1 and drum 20, which is connected to so mam 3" through finger 1 and lead 8. The

coil 12 is therefore subjected to the voltage of erator 1' and switch 10 is closed.

or 'tion 2*, finger 1, is cut out of contact with drum 20, and a section of resistance 6 is inserted in the field circuit the field current passing from the field 5 to finger 1 through a section of the fiel resistance and then to drum 20.

40 of the motor an increased speed is obtained. In the same wa for sition 2 a still fnrther weakening of e d takes place by Inserting another section of resistance 6 m the field circuit, and in this sition current passes from the field 5 through two sections of resistance to finger 1' and drum 20.

For position 2 the armature connections are from main 3 to finger 1, contact 28, drmn 19, contact 29, finger 1 lead 23, armature 4, lead 24, switch 10, leads 9 and 25, finger I", contact 30, drum 18, contact 31, finger 1, to main 3. The annature of the motor is therefore subjected to the voltage of generator 1 which is greater than that of enerator 1'. The field connections and ose of coil 12 are the same for this POSitlOll as for position 2, and the speed of the motor is increased by the increase 111 voltage applied to its armature. For positions 2' and 2 the 0 only changes that take place are the weakening of the field by cutting in sections of re sistance 6 as in positions 2 and 2.

For position 2' the armature connections are from main 3" to finger 1", contact 32, drum 19, contact 33, finger 1'. lead 23, arma- No other changes take place, and by thus weakening the field tore 4, lead 24, switch 10, lcads S) and 25, ii|1- gel 1", contact 34, drum 18, contact 35, linger l, to main 3. The armature of the motor is therefore subjected to the total voltage of both generators. The field connections and those of coil 12 are the same as for positions 2 and 2, with resistance 6 cut out, an increased speed is obtained by the increase in clectromotlve force applied to the motor armature.

For positions 2 2*, and 2 the connections remain the same except that sections of resistance 6 are successively cut in until it is all in circuit and in this manner successively weakening the field for increases in speed from position 2' to 2'.

It will be noted that in passing from position 2" to 2, and from 2' to 2, at which times the change in voltage applied to the motor armature takes place, linger 1 is momentarily cut out of contact with the drum 20 and clrcuit through coil i2 is broken. At the instant finger l breaks contact with drum 20, switch 10 dm 8 and resistance 9 is inserted in series with t e armature 4, so that when the increased voltage is applied to the armature, this resistance will prevent a too sudden rush of current with consequent strains on the motor. As coil 12 is again placed in circuit at positions 2 and 2, the I switch 10 will be closed and the resistance 9' g short circuited, but on account of the slow upward movement of the switch the motor will have had suilicient time to increase in speed before the switch is closed. In starting the switch 10 is closed in the same manner.

For reverse rotation of the motor, the fingers are in position 3 to 3 successivelv. For position 3 the current passes from main 3 to linger 1 contact 36, drum 19, contact 3?, finger 1, lead 9, switch 10, lead 24, armature 4, loads 23 and 3S, finger 1, contact 39. drum 18, contact 40, finger I, to main 3'. The armature 4 is therefore subjected to voltage of generator 1', and the armature current is reversed, while the field is the same as for position 2. The direction of rotation of the motor is therefore reversed and the motor operates at its slowest speed. For positions 3 and 3 the field strength is weakened as before. For position 3" the circuit is as follows: main 3 finger 1', contact- 41, drum 19, contact 42, gcr 1 lead 9, switch 10, lead 24, armature 4, leads 23 and 3S. finger I contact 43, drum 18, contact 44, finger 1 to main 3. For this position. although the motor has its full field strength as in position 3, an increased speed is obtained by reason of the armature being subjected to the voltage of generator 1. At positions 3' and 3', increased speeds are obtained by weakening the field strength. For position 3 the connections are as follows: rom main 3" to finger I", contact 45, drum 19, contact 46, fingroceries-s ri ,de a upon the direc-' -.;tien;r in whi h the ha in clle s i s turned, and, as 'the'garm 85'remains stationary, the tension ff=- ol-.sprin"g; -1 is;;greatly increased. One of ,-,z'the'; roll ers' 107 then-engages the head 96 on l the 'outer side which actnonforces-the lug 95- "ward-[an raises'thepavIlSS from 1ts I lfhe, -tena1on obthespr ng i n'quit r ne-th cylinder, e 103 s uish-break between the fingers conc. of: the and-thespnng 9;? checks movement byfor'cin'g the pawl Into the l-a'djacentnotch, er-second tnrnof the ban- 1 ,5 die-is then necessary to b the rollers 107 iiitd-cilgagement mth the re r 96 in order to. the following 'notch a .'nd obtain a tot speed. Owing to the I q 1.'i k+b and t'o-the further fact that the '3; citcoiti'hpon, change of voltage, is broken at sofoor points; as is evident from Fig; 1, the :5 s1; l "isreduced to amininmm and the that docs occur is coniined and asmall area by the deflectors.

f -The; connections and circuits b which f=Zcliangeof speed is obtained; as w as the r 1 automatic cimt-rol of thearmature resistance,

. alread been explained. After passing from thee; positionto the positions 2 or 3 f J further movement is prevented by the log 88 8 0 on1t he co into contact with the 7 stop -99; and in these positions undue strain upon sp 101 and damage to other parts 15 prevented y-the projection I04 engaging one ,s or the other of the lugs 111.

8:5 as my inventions-'- der, contacts carried thereby, deflectors between the contacts, rods for support the deflectors, each rod passing through the 40 'defi0ct0l'S,- a'ndproections secured'to the frame of the contro r, located between adjacent deflectors.

v 2. The combination of a controller cylin- 'der, contacts carried thereby, deflectors be- -'45 tween the contacts rods for support the deflectors, each rod passing through the deflectors, and projections secured to the frame of the controller located between adja- I 1 cent deflectors, the rods and deflectors being removable as a whole.

. a l '35 The combination of a controller cylin- 1er,- contacts thereby, deflectors between the'contacts,,rods passing'through the deflectorsgsaid defiedtorfbeing spaced by fttsleeves ofinsulating material on said rods,

j 1 and projections: secured to the frame ofthe controllerlocste'd j-between' adjacent deflec- 4-. The combination of a controller cylin- "5 der," contactsjcarried'thereby, defiectors be- "1* r c e Pa n th shf deflectors fsmd "deflectors being. spaced. by o 'finsnlat'ingirkmaterisl-on said rods, sni-sr sss q swr -wa e a f the 518 controller" locatcdwbetwecn; adjacent deflec- 1. The combination of a controller cylinbar the combination of an arm' fixed to the contors, the rods and deflectors being removable as a whole.

5. The combination of a controller cylinder, contacts carried thereby, fingers engaging the contacts and connected to conducting 7 strips, deflectors between said contacts rods passing through the deflectors, said deflectors' being spaced by sleeves of insulating material on said rods, and an extension from each of said conducting strips for supporting and spacing the deflectors, the rods and de flectors being removable as a whole.

it In an operating device for a controlling switch, the combination of a member controlling the movement of the movable switch contact or contacts, a primary member, a

notched controller plate 9. sp eng said members and located aboves a ld 110x25 plate a catch carried by said controlling member and adapted to engage openiraigs in the controller plate, and means carri by said primary member acting to withdraw said catch.

7. In an operating device for a controlling switch, the combination of a member controlling the movement of the movable switch contact or contacts, a primary member, a notched controller late, resilient means locatcd'above said p to tending to keep said members in-fixed positions relatively to each other, a catch carried by said controlling member and adapted to engage openiggs in the controller plate, and means carri by said primary member acting to withdraw said catch upon moving said primary mem 8. In an operating device for a controlling switch, the combination of a member controlling the movement of the movable switch contact or contacts, a primary member, a notched controller plate resilient means located above said plate tending to keep said members in fixed positions relatively to each other, a catch carried by said controlling member and adapted toengage o e in the controller plate, and means carri said primary member acting to simultaneously increase the tension of said resilient, means and to withdraw said catch upon moving said primary member.

9. In an operating device for a controller,

the combination of an arm fixed to the controller shaft, a handle, a spring cngsg said arm and handle, a pawl carried by sai arm and adapted to engage notches in the contilioller p ate, antgdmeanshgcarrieil by the baneact towi rawt w u onturni the halide .10. In an operating device for a controller,

troller' shaft, a handle a tendi to keep said arm and haddle i h ii x ed positions relatively toeachother, a pawl carried by said arm and adapted to engage notches in the controller plate, and means carried by the handle acting to withdraw the pawl upon turning the handle.

11. In on operating do ice for a controller, the combination of on amt fixed to the controller shaft, a handle, a spring tending to keep said arm and handle in fixed positions relatively to each other, a pawl carried by said arm and adapted to engage notches in the controller plate, and means carried by the handle acting to simultaneously increase the tension of said sprin and to withdraw the pawl upon turning the handle.

12. In an operating do ice for a controller, the combination of an arm secured to the controller shalt a awl carried thereby adapted to enga e notc RES in the controller plate, a spring for orcing said pawl into said notches, an o crating handle and a spring to kee said iandle in line with said arm, said hand 0 acting to withdraw the awl from the notch engaged upon turning t to handle.

13. In an operating do .ice for a controller, the combination of an arm fixed to the controller shaft, a handle, a sprino tending to keep said arm and said handle in fixed positions relatively to each other, a pawl carried by said arm and adapted to enga e the notched controller plate, a spring att-ac ed to said )awl and arm, and pro ecting parts carried y the handle acting to engage the pawl upon turning the handle.

14. In an operating do 1 ice for a controller,

the combination of an arm fixed to the controller shaft, a handle, a s ring tending tokeep said arm and said handle in fixed positions relatixely to each other, apawl carried by said arm and adapted to engage the notched controller plate, a spring attached to said pawl and arm, and re lers carried by the handle actin to engage the pawl upon turning the hand c.

15. In an operating device for a controller, the combination of an arm fixed to the controllcrshaft, a handle, a 5 ring tending to keep said arm and said hon e in fixed positions relatively to each other, a pawl carried by said arm, said pawl having a projecting part and adapted to engage the notched controller plate, a spring attached to said pawl and arm, and pro ecting parts carrie by the handle acting to engage said prlojecting part on the )flWl upon turning the ndle.

16. u an operating device for :1 cont roller, the combination of an arm fixed to the controller shaft, a. handle. a spring tending to keep said arm and said handle in fixed positions relatively to each other, a pawl carried by said arm, said pawl having a projecting part and adapted to engage the notched controller plate, a spring attached to said pawl and arm, and rollers carried by the handle acting to engage said projecting, part on the pawl 11 on turning the handle.

17. ii an operating device for a controller, the combination of an arm fixed to the controller shaft, a handle, a spring tending to keep said arm and said handle in lixed positions re|ati'-ely to each other, a pawl carried by said arm and adapted to engage the notched controller plate, a roller valil b said pawl, a spring attached to said owl and arm, and rejecting parts carric by the handle acting to engage said roller upon turnin the handle.

l8. n an operating device for a controller, the combination of an arm fixed to the controller shaft, a handle, a spring tending to keep said arm and said handle in fixed positions relatively to each other, a pawl carried by said arm and adapted to engage the notched controller plate, a roller carried by said pawl, a spring attached to said awl and arm, and rollers carried by the ham le acting to engage said roller upon turning the handle.

19. In an operating device for a controller, the combination of an arm fixed to the controller shaft, a handle, a spring tending to keep said arm and said handle in lixed positions relatively to each other, a pawl pivoted between extensions on said arm and adapted to engage the notched controller plate, a Spring attached to said )awl and arm, a roller carried byanu Walt extension on said pawl, rollers carried y said handle and extending downwardly acting to engage the roller carried by the pawl upon turning the handle.

20. The combination of multiple voltage mains, a motor, a field resistance for said motor, a controller and connecting leads, said controller having a single cvlinder and contacts thereon, arranged so that turni v the cylinder in one direction for forwar speeds varies the Voltage supplied to the armature circuit of the motor and varies the field resistance, and turning the cylinder in the opposite direction varies the voltage supplied to the armature circuit of the motor, and also reverses the rotation of the motor.

21. The combination of multiple voltage mains, a motor, a field resistance for said motor, a controller and connecting leads, said controller having a single cylinder and contacts thereon, arranged so that turnin the cylinder in one direction for forwar speeds varies the voltage supplied to the armature circuit of the motor and varies the field resistance, and turning the cvlinder in the opposite direction varies the voltage supplied to the armature circuitof the motor, and varies the field resistance and also reverses the rotation of the motor.

22. In a controlling switch, the combination of the movable switch element, a fixed member, a. catch carried by said element, for locking the same in definite positions to said fixed member, a second element movable with reference to said first named element, and means located above said fixed member and controlled by said second element for exerting a force upon said first element tcndcontacts, a fixed member, a cut-ch carried by ing to move the some and for releasing sand said arm and ads, ted to engage openings for catch. locking the arm in definite positions to said 23. In a. controlling switch, the combinafixed member, a second arm pivoted concention of a pivoted arm for controlling the trically with reference lo said first named movement of the movable switch contact or arm, movable with reference thereto and contacts, a fixed member, a. catch carried by normally parallel therewith, a spring consaid arm and adapted to lock the same in necting said arms and located above said definite positions to said fixed member, a i fixed member, and means carried by said second arm movable with reference to said second arm and ada ted to displace said first named arm and normally in alinement 4 catch after said second arm has been moved therewith, resilient means connecting said a. predetermined amount, with reference to arms and located above said fixed member, 1 881d first named arm. and means carried by said second arm for In testimony whereof we allix our signatures, in presence of two witnesses.

releasing said catch after said second arm has been moved a redetermined amount i WILLIAM D. POMEROY. with reference to sai first named arm. EDW'IN C. WR IGH'lr 24. In a. controlling switch, the combina- Witnesses: tion of a pivoted arm for controlling the L. K. SAGEB,

Smronn KLEIN.

movement of the movable switch contact or i exerting a force upon said first element tcndcontacts, a fixed member, a cut-ch carried by ing to move the some and for releasing sand said arm and ads, ted to engage openings for catch. locking the arm in definite positions to said 23. In a. controlling switch, the combinafixed member, a second arm pivoted concention of a pivoted arm for controlling the trically with reference lo said first named movement of the movable switch contact or arm, movable with reference thereto and contacts, a fixed member, a. catch carried by normally parallel therewith, a spring consaid arm and adapted to lock the same in necting said arms and located above said definite positions to said fixed member, a i fixed member, and means carried by said second arm movable with reference to said second arm and ada ted to displace said first named arm and normally in alinement 4 catch after said second arm has been moved therewith, resilient means connecting said a. predetermined amount, with reference to arms and located above said fixed member, 1 881d first named arm. and means carried by said second arm for In testimony whereof we allix our signatures, in presence of two witnesses.

releasing said catch after said second arm has been moved a redetermined amount i WILLIAM D. POMEROY. with reference to sai first named arm. EDW'IN C. WR IGH'lr 24. In a. controlling switch, the combina- Witnesses: tion of a pivoted arm for controlling the L. K. SAGEB,

Smronn KLEIN.

movement of the movable switch contact or i 

